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    • 106. 发明专利
    • Method for producing carboxylic acid
    • 生产羧酸的方法
    • JP2005154297A
    • 2005-06-16
    • JP2003391751
    • 2003-11-21
    • Idemitsu Kosan Co Ltd出光興産株式会社
    • SARUWATARI TETSUYA
    • C07B61/00C07C51/14C07C53/126
    • C07C51/14C07C53/126
    • PROBLEM TO BE SOLVED: To provide a method for producing a carboxylic acid by reacting a 12C monoolefin containing ≥50 mass % of an isobutylene unit with carbon monoxide and water, by which the formation of a low-molecular weight carboxylic acid caused by cleavage of a carbon skeleton is controlled.
      SOLUTION: In the method for producing a carboxylic acid by reacting a 12C monoolefin containing ≥50 mass% of an isobutylene unit with carbon monoxide and water in the presence of a catalyst composed of sulfuric acid and a metal compound or sulfuric acid, phosphoric acid and a metal compound, Hammett acid strength (H
      0 ) of the catalyst is adjusted to -9.2 to -6 and the reaction temperature is regulated at ≤20°C.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 待解决的问题:提供一种通过使含有≥50质量%异丁烯单元的12C单烯烃与一氧化碳和水反应生成羧酸的方法,由此形成低分子量羧酸 通过切割碳骨架被控制。 解决方案:在由硫酸和金属化合物或硫酸组成的催化剂存在下,使含有≥50质量%的异丁烯单元的12C单烯烃与一氧化碳和水反应制备羧酸的方法中, 磷酸和金属化合物,将催化剂的哈米特酸强度(H 0 )调节至-9.2至-6,将反应温度调节至≤20℃。 版权所有(C)2005,JPO&NCIPI